A pseudo-differential calculus on non-standard symplectic space; Spectral and regularity results in modulation spaces

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Abstract

The usual Weyl calculus is intimately associated with the choice of the standard symplectic structure on Rn⊕Rn. In this paper we will show that the replacement of this structure by an arbitrary symplectic structure leads to a pseudo-differential calculus of operators acting on functions or distributions defined, not on Rn but rather on Rn⊕Rn. These operators are intertwined with the standard Weyl pseudo-differential operators using an infinite family of partial isometries of L2(Rn)→L2(R2n) indexed by S(Rn). This allows us to obtain spectral and regularity results for our operators using Shubin's symbol classes and Feichtinger's modulation spaces. © 2011 Elsevier Masson SAS.

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Dias, N. C., De Gosson, M., Luef, F., & Prata, J. N. (2011). A pseudo-differential calculus on non-standard symplectic space; Spectral and regularity results in modulation spaces. Journal Des Mathematiques Pures et Appliquees, 96(5), 423–445. https://doi.org/10.1016/j.matpur.2011.07.006

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